Citation

O'Neil MJ, Heckelman PE, Koch CB, Roman KJ, editors. 2009. The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 14th edition. Electronic version [online]. Whitehouse Station (NJ): Merck & Co., Inc. [Accessed 2009 November 27]. Available at: http://www.medicinescomplete.com/mc/merck/current/monographs.htm